About Housing First. 1  According to the National Alliance to End Homelessness, Housing First is an approach to ending homelessness that centers on providing people experiencing homelessness with housing as quickly as possible â and then providing services as needed.
In human geography, a catchment area is the area from which a city, service or institution attracts a population that use their services. For example, a school catchment area is the geographic area from which students are eligible to attend a local school. Supermarkets, on the other hand, have a much lower density, with catchment areas of several neighborhoods (or several villages in rural areas). 2  This principle, similar to the central place theory, makes catchment areas an important area of study for geographers, economists, and urban planners.
A healthy catchment is one that is still able to function as a catchment should. It should be able to filter and clean water as it flows overland and seeps through the ground, and there should be lots of opportunities for water to seep into the ground so that it can be used by plants.very inch of land on the Earth forms part of a catchment. Catchments can range greatly in size from small urban sub-catchments such as Prospect Creek that feeds part of the larger Georges River Catchment, to massive catchments such as the Murray-Darling Basin that spans three states.